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  1. Article ; Online: Working from home in pediatric radiology: to be or not to be, it's not a simple question.

    Chavhan, Govind B / Podberesky, Daniel J

    Pediatric radiology

    2022  Volume 52, Issue 7, Page(s) 1199–1201

    MeSH term(s) Child ; Humans ; Radiology
    Language English
    Publishing date 2022-04-20
    Publishing country Germany
    Document type Journal Article ; Comment
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-022-05343-5
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  2. Article ; Online: Introduction.

    Gee, Michael S / Chavhan, Govind B

    Pediatric radiology

    2021  Volume 51, Issue 5, Page(s) 697

    Language English
    Publishing date 2021-04-19
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-020-04855-2
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  3. Article ; Online: Introduction: 3rd Pediatric Body MRI Course supplement.

    Chavhan, Govind B / Dillman, Jonathan R

    Pediatric radiology

    2021  Volume 52, Issue 2, Page(s) 151

    MeSH term(s) Child ; Humans ; Magnetic Resonance Imaging
    Language English
    Publishing date 2021-07-30
    Publishing country Germany
    Document type Editorial
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-021-05151-3
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  4. Article ; Online: The Global Reading Room: An Incidental Liver Lesion in a Teenager.

    Chavhan, Govind B / Kim, Ji Hye / Squires, Judy H / Toso, Seema

    AJR. American journal of roentgenology

    2023  Volume 222, Issue 1, Page(s) e2329350

    MeSH term(s) Humans ; Adolescent ; Incidental Findings ; Liver Neoplasms
    Language English
    Publishing date 2023-03-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.23.29350
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  5. Article ; Online: Imaging of pediatric gastrointestinal tumors: A tertiary center experience over 19 years.

    Kraus, Mareen S / Selvam, Swathi / Siddiqui, Iram / Reyes, Jeanette A / Chavhan, Govind B

    European journal of radiology

    2024  Volume 175, Page(s) 111461

    Abstract: Purpose: Gastrointestinal tract (GIT) tumors in children are rare and there is a scarcity of data on their imaging features. The purpose of this study was to determine thefrequency of various GIT tumor types in children and to identify key imaging ... ...

    Abstract Purpose: Gastrointestinal tract (GIT) tumors in children are rare and there is a scarcity of data on their imaging features. The purpose of this study was to determine thefrequency of various GIT tumor types in children and to identify key imaging characteristics.
    Methods: This retrospective, single-center study was approved by the local ethics committee. Children with histologically proven GIT tumours (malignantand benign) who had imaging available on the institutional PACS between May 1, 2000 and Dec 31, 2019 were included. Demographic data and available imaging was reviewed by two blinded radiologists.
    Results: In total, 90 children (45 male, mean age 9.3 ± 4.3 years) with GIT tumours were included. The final diagnoses included polyps (n = 28), lymphomas/PTLD (n = 27), neuroendocrine tumours (n = 16), adenocarcinoma (n = 6), adenoma (n = 5), gastrointestinal stromal tumor (GIST) (n = 3), inflammatory myofibroblastic tumours (n = 2) and lastly leiomyoblastoma, leiomyoma and lipoma (1 each). All GIT segments were affected, but overall the small and large bowel had most lesions. Eighty-one percent children had a single lesion while remaining 19 % had multiple lesions. The neoplastic process manifested as intra-luminal lesion (58 %) or wall thickening (42 %) on imaging. Multiple cystic areas and vascular pedicle for polyps; and hypoechogenecity of the mass or wall thickening and aneurysmal dilatation for lymphomas, were the characteristic imaging features. None of the neuroendocrine tumours affecting appendix were seen on pre-resection imaging.
    Conclusions: Variety of benign and malignant tumors are seen throughout the childhood. Polyps, lymphomas and appendiceal neuroendocrine tumors are common lesions. Characteristic imaging features of juvenile polyps and lymphomas on ultrasound may help narrowing the differentials, and guide further work up.
    MeSH term(s) Humans ; Male ; Female ; Child ; Retrospective Studies ; Gastrointestinal Neoplasms/diagnostic imaging ; Gastrointestinal Neoplasms/pathology ; Tertiary Care Centers ; Adolescent ; Child, Preschool ; Magnetic Resonance Imaging/methods
    Language English
    Publishing date 2024-04-10
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 138815-0
    ISSN 1872-7727 ; 0720-048X
    ISSN (online) 1872-7727
    ISSN 0720-048X
    DOI 10.1016/j.ejrad.2024.111461
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  6. Article ; Online: Appropriate selection of MRI sequences for common scenarios in clinical practice.

    Chavhan, Govind B

    Pediatric radiology

    2016  Volume 46, Issue 6, Page(s) 740–747

    Abstract: Knowledge about sequence properties is essential to plan and acquire a diagnostic MRI examination. The broad four categories of sequences include spin echo (SE), gradient echo (GRE), inversion recovery (IR) and echoplanar imaging (EPI). Varieties of ... ...

    Abstract Knowledge about sequence properties is essential to plan and acquire a diagnostic MRI examination. The broad four categories of sequences include spin echo (SE), gradient echo (GRE), inversion recovery (IR) and echoplanar imaging (EPI). Varieties of sequences from these four categories are available for clinical application. They have different contrast mechanisms, spatial and contrast resolution and speed of acquisition. Choice of sequence differs in various scenarios in clinical practice such as solid organ imaging, moving target imaging, bone and bone marrow imaging, cartilage imaging and vessel imaging, taking into consideration properties of sequences to answer the clinical question. Broad classification of sequences and differences in their contrast, spatial and contrast resolution, and speed of acquisition are discussed in this review. A few common clinical scenarios of MRI imaging are illustrated, along with reasons for the given sequence choices.
    MeSH term(s) Child ; Humans ; Magnetic Resonance Imaging/methods ; Pediatrics/methods
    Language English
    Publishing date 2016-05
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-016-3556-4
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  7. Article ; Online: Liver magnetic resonance imaging: how we do it.

    Chavhan, Govind B / Farras Roca, Lara / Coblentz, Ailish C

    Pediatric radiology

    2021  Volume 52, Issue 2, Page(s) 167–176

    Abstract: Magnetic resonance imaging is used for evaluating focal liver lesions, hepatic vascular diseases, biliary diseases and diffuse liver diseases in children. MRI examinations take a long time, often requiring sedation or anesthesia in smaller children. This ...

    Abstract Magnetic resonance imaging is used for evaluating focal liver lesions, hepatic vascular diseases, biliary diseases and diffuse liver diseases in children. MRI examinations take a long time, often requiring sedation or anesthesia in smaller children. This makes it essential to understand the concepts and technique necessary to obtain an optimal examination for answering the clinical question while minimizing the need for sedation/anesthesia. We discuss key concepts including appropriate sequence selection, choice of contrast media, dynamic imaging, phases of contrast enhancement and protocol organization.
    MeSH term(s) Child ; Contrast Media ; Gadolinium DTPA ; Humans ; Liver/diagnostic imaging ; Liver Neoplasms ; Magnetic Resonance Imaging ; Magnetic Resonance Spectroscopy
    Chemical Substances Contrast Media ; Gadolinium DTPA (K2I13DR72L)
    Language English
    Publishing date 2021-04-02
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-021-05053-4
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  8. Article ; Online: Introduction: 2nd pediatric body MRI course supplement.

    Dillman, Jonathan R / Chavhan, Govind B

    Pediatric radiology

    2018  Volume 48, Issue 9, Page(s) 1187

    MeSH term(s) Child ; Humans ; Magnetic Resonance Imaging/methods ; Pediatrics/education
    Language English
    Publishing date 2018-08-04
    Publishing country Germany
    Document type Introductory Journal Article
    ZDB-ID 124459-0
    ISSN 1432-1998 ; 0301-0449
    ISSN (online) 1432-1998
    ISSN 0301-0449
    DOI 10.1007/s00247-018-4160-6
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  9. Article ; Online: A pilot feasibility study of an ultrasound-based tool to assess muscle mass in children with liver disease.

    Shpoliansky, Michael / Chavhan, Govind B / Zhou, Alex / Ng, Vicky L / Kamath, Binita M

    Hepatology communications

    2023  Volume 7, Issue 8

    Abstract: Background: Sarcopenia is associated with adverse outcomes following liver transplantation, and at-risk children must be identified and prehabilitated. The gold standard for assessing sarcopenia in end-stage liver disease (ESLD) is CT assessment of the ... ...

    Abstract Background: Sarcopenia is associated with adverse outcomes following liver transplantation, and at-risk children must be identified and prehabilitated. The gold standard for assessing sarcopenia in end-stage liver disease (ESLD) is CT assessment of the total Psoas Muscle Area (tPMA). However, radiation exposure and sedation requirements make this approach impractical for children. The bilateral anterior thigh thickness (BATT) is the cumulative measurement of the rectus femoris and vastus intermedius muscles by ultrasound and has been used to identify sarcopenia in adults. There are no studies assessing muscle mass in children using ultrasound. We hypothesized that measuring BATT with ultrasound in children with ESLD is feasible and is associated with sarcopenia.
    Methods: A prospective pilot feasibility study of patients with ESLD on the liver transplantation waitlist and age-matched healthy controls. BATT was measured by a single operator using ultrasound. tPMA indices were determined by CT imaging, along with clinical and anthropometric data.
    Results: Thirty children were studied between September 2021 and December 2022, 15 listed patients aged 4-30 months, and 15 controls aged 4-32 months. No major technical challenges or complications were encountered while performing the ultrasounds. Median BATTs of 30.8 mm (interquartile range: 27.9-32.8 mm) versus 32.7 mm (interquartile range: 31.8-36.9 mm) were demonstrated in the ESLD and control groups, respectively, and p = 0.01. A positive correlation (R = 0.603) was demonstrated between BATT and tPMA at the L4-5 level among patients with ESLD. No correlation was observed between BATT and anthropometrics.
    Conclusions: This study yields novel data on the feasibility of ultrasound to measure mid-thigh thickness in children with ESLD and suggests a correlation between BATT and tPMA, the gold standard for diagnosing sarcopenia. It sets the stage for ultrasound as a simple, noninvasive, and easily repeatable tool for assessing sarcopenia in children.
    MeSH term(s) Adult ; Humans ; Child ; Sarcopenia/diagnostic imaging ; Sarcopenia/complications ; Feasibility Studies ; Prospective Studies ; End Stage Liver Disease ; Muscles
    Language English
    Publishing date 2023-07-28
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2471-254X
    ISSN (online) 2471-254X
    DOI 10.1097/HC9.0000000000000211
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  10. Article: Can Dynamic Contrast-Enhanced MRI be Used to Differentiate Hepatic Hemangioma from Other Lesions in Early Infancy?

    Halevy, Dan / Sayed, Blayne A. / Shaikh, Furqan / Siddiqui, Iram / Chavhan, Govind B.

    Indian Journal of Radiology and Imaging

    2024  

    Abstract: Background: Confident diagnosis of hepatic hemangioma on imaging can avoid biopsy in early infancy and helps guide conservative management.: Purpose: This article aims to determine if dynamic contrast-enhanced magnetic resonance imaging (MRI) can be ... ...

    Abstract Background: Confident diagnosis of hepatic hemangioma on imaging can avoid biopsy in early infancy and helps guide conservative management.
    Purpose: This article aims to determine if dynamic contrast-enhanced magnetic resonance imaging (MRI) can be used to differentiate liver hemangioma from other lesions in infants ≤ 100 days and to determine association of MRI features with hepatic lesions.
    Methods: MRI performed for liver lesions were retrospectively reviewed to note imaging characteristics and the MRI diagnosis. Final diagnosis was assigned based on pathology in available cases and by corroborative standard of reference including overall clinical features, lab findings, and follow-up.
    Results: Of 30 infants (18 boys, 12 girls; average age 42.2 days) included, 18 had solitary and 12 had multifocal lesions. Diagnoses in total 33 lesions included hemangiomas (23), hepatoblastoma (6), arteriovenous malformation (2), neuroblastoma metastases (1), and infarction (1). MRI and final diagnosis matched in 94% lesions with almost perfect agreement (kappa 0.86) for reader 1, and matched in 88% lesions with substantial agreement (kappa 0.71) for reader 2. Interobserver agreement for MRI diagnosis was substantial (kappa 0.62). Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of MRI in differentiating hemangioma from other lesions were 100, 90, 96, 100, and 97%, respectively. Centripetal (16/23) or flash (5/23) filling were only seen with hemangioma. There was no significant difference in alpha-fetoprotein elevation ( p 0.08), average size ( p 0.35), multifocality ( p 0.38), and intralesional hemorrhage ( p 1) between hemangioma and hepatoblastoma.
    Conclusion: Centripetal filling on dynamic imaging and absence of washout are characteristic MRI features of hepatic hemangioma that can help to differentiate it from other lesions in early infancy.
    Keywords liver ; neonate ; infants ; hemangioma ; hepatoblastoma ; imaging
    Language English
    Publishing date 2024-04-21
    Publisher Thieme Medical and Scientific Publishers Pvt. Ltd.
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 605869-3
    ISSN 1998-3808 ; 0971-3026 ; 0970-2016
    ISSN (online) 1998-3808
    ISSN 0971-3026 ; 0970-2016
    DOI 10.1055/s-0044-1785208
    Database Thieme publisher's database

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