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  1. Book: Advanced MR imaging in clinical practice

    Chandarana, Hersh

    (Radiologic clinics of North America ; 53,3)

    2015  

    Author's details ed. Hersh Chandarana
    Series title Radiologic clinics of North America ; 53,3
    Collection
    Language English
    Size XI S., S. 441 - 617 : zahlr. Ill., graph. Darst.
    Publisher Elsevier
    Publishing place Philadelphia, Pa
    Publishing country United States
    Document type Book
    HBZ-ID HT018692937
    ISBN 978-0-323-37617-4 ; 0-323-37617-7
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    Ue I Zs 276 -53,3- verfügbar in Königswinter Königswinter

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  2. Article ; Online: The Role of Proton MRI to Evaluate Patient Pathophysiology in Severe Asthma.

    Moore, William H / Chandarana, Hersh

    Radiology. Cardiothoracic imaging

    2024  Volume 5, Issue 6, Page(s) e230372

    MeSH term(s) Humans ; Protons ; Asthma/diagnostic imaging ; Lung ; Magnetic Resonance Imaging
    Chemical Substances Protons
    Language English
    Publishing date 2024-01-02
    Publishing country United States
    Document type Journal Article
    ISSN 2638-6135
    ISSN (online) 2638-6135
    DOI 10.1148/ryct.230372
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Low Field MRI Surveillance 6-24 Months Post-acute COVID-19 Pneumonia: Factors Influencing Severity and Evolution of Lung Opacities.

    Azour, Lea / Chandarana, Hersh / Maier, Christoph / Babb, James / Moore, William

    Academic radiology

    2024  

    Abstract: Rationale and objectives: To determine factors influencing low-field MRI lung opacity severity 6-24 months after acute Covid-19 pneumonia.: Materials and methods: 104 post-acute Covid-19 patients with 167 MRI exams were included. 32 patients had more ...

    Abstract Rationale and objectives: To determine factors influencing low-field MRI lung opacity severity 6-24 months after acute Covid-19 pneumonia.
    Materials and methods: 104 post-acute Covid-19 patients with 167 MRI exams were included. 32 patients had more than one exam, and 63 exams were serial exams. Pulmonary findings were graded on a scale of 0-4 by quadrant, total score ranging from 0 (no opacity) to 16 (opacity > 75%), and score >8 considered moderate and >12 severe opacity. Kruskal-Wallis, Mann-Whitney, and Spearman rank correlation was used to assess the association of clinical and demographic factors with MR opacity severity at time intervals from acute infection. Random coefficients regression was used to assess whether opacity score changed over time.
    Results: Severity of initial illness was associated with increased MR opacity score at timeframes up to 24 months (p < .05). Among the 167 exams, moderate to severe MR opacities (total opacity score >8) were identified in 33% of exams beyond 6 months: 37% at 6 - <12 months (n = 23/63); 31% at 12- < 18 months (n = 13/42); 25% at 18- < 24 months (n = 6/24); and 50% at > 24 months (n = 3/6). No significant change in total opacity score over time was identified by random coefficients regression. Among the 32 patients with serial exams, 11 demonstrated no change in opacity score from initial to final exam, 10 decrease in score (mean 2.3, stdev 1.25, range 1-4), and 11 increase in score (average 2.8, stdev 1.48, range 1-7).
    Conclusion: Initial Covid-19 disease severity was associated with increased MRI total opacity score at time intervals up to 24 months, and moderate to severe opacities were commonly identified by low-field MRI beyond 6 months from acute illness.
    Language English
    Publishing date 2024-03-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1355509-1
    ISSN 1878-4046 ; 1076-6332
    ISSN (online) 1878-4046
    ISSN 1076-6332
    DOI 10.1016/j.acra.2024.02.021
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  4. Article ; Online: Noninvasive Staging of Liver Fibrosis with Dual-Energy CT: Close but No Cigar.

    Chandarana, Hersh / Shanbhogue, Krishna

    Radiology

    2021  Volume 298, Issue 3, Page(s) 609–610

    MeSH term(s) Humans ; Liver/pathology ; Liver Cirrhosis/diagnostic imaging ; Liver Cirrhosis/pathology ; Tomography, X-Ray Computed
    Language English
    Publishing date 2021-01-05
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 80324-8
    ISSN 1527-1315 ; 0033-8419
    ISSN (online) 1527-1315
    ISSN 0033-8419
    DOI 10.1148/radiol.2021204315
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  5. Article ; Online: Advances in MR Imaging.

    Chandarana, Hersh

    Radiologic clinics of North America

    2015  Volume 53, Issue 3, Page(s) xi

    MeSH term(s) Humans ; Magnetic Resonance Imaging/methods
    Language English
    Publishing date 2015-05
    Publishing country United States
    Document type Introductory Journal Article
    ZDB-ID 215712-3
    ISSN 1557-8275 ; 0033-8389
    ISSN (online) 1557-8275
    ISSN 0033-8389
    DOI 10.1016/j.rcl.2015.03.001
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  6. Article ; Online: Respiratory Motion Management in Abdominal MRI:

    Nepal, Pankaj / Bagga, Barun / Feng, Li / Chandarana, Hersh

    Radiology

    2022  Volume 306, Issue 1, Page(s) 47–53

    Abstract: A 96-year-old woman had a suboptimal evaluation of liver observations at abdominal MRI due to significant respiratory motion. State-of-the-art strategies to minimize respiratory motion during clinical abdominal MRI are discussed. ...

    Abstract A 96-year-old woman had a suboptimal evaluation of liver observations at abdominal MRI due to significant respiratory motion. State-of-the-art strategies to minimize respiratory motion during clinical abdominal MRI are discussed.
    MeSH term(s) Female ; Humans ; Aged, 80 and over ; Abdomen ; Motion ; Magnetic Resonance Imaging ; Radiography ; Radiology ; Respiration
    Language English
    Publishing date 2022-08-23
    Publishing country United States
    Document type Case Reports ; Journal Article ; Review ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 80324-8
    ISSN 1527-1315 ; 0033-8419
    ISSN (online) 1527-1315
    ISSN 0033-8419
    DOI 10.1148/radiol.220448
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: MP-RAVE: IR-Prepared T

    Solomon, Eddy / Lotan, Eyal / Zan, Elcin / Sodickson, Daniel K / Block, Kai Tobias / Chandarana, Hersh

    Magnetic resonance in medicine

    2023  Volume 90, Issue 1, Page(s) 202–210

    Abstract: Purpose: To describe an inversion-recovery T: Methods: The proposed sequence, named MP-RAVE, has been derived from a previously described radial stack-of-stars 3D GRE sequence (RAVE) and includes a 180° inversion recovery pulse that is generated once ...

    Abstract Purpose: To describe an inversion-recovery T
    Methods: The proposed sequence, named MP-RAVE, has been derived from a previously described radial stack-of-stars 3D GRE sequence (RAVE) and includes a 180° inversion recovery pulse that is generated once for every stack of radial views. The sequence is combined with retrospective 3D motion correction to improve robustness. The effectiveness has been evaluated in phantoms and healthy volunteers and compared to conventional MP-RAGE acquisition.
    Results: MP-RAGE and MP-RAVE anatomical images were rated "good" to "excellent" in overall image quality, with artifact level between "mild" and "no artifacts", and with no statistically significant difference between methods. During head motion, MP-RAVE showed higher inherent robustness with artifacts confined to local brain regions. In combination with motion correction, MP-RAVE provided noticeably improved image quality during different head motion and showed statistically significant improvement in image sharpness.
    Conclusion: MP-RAVE provides comparable image quality and contrast to conventional MP-RAGE with improved robustness to head motion. In combination with retrospective 3D motion correction, MP-RAVE can be a useful alternative to MP-RAGE, especially in non-cooperative or pediatric patients.
    MeSH term(s) Humans ; Child ; Retrospective Studies ; Imaging, Three-Dimensional/methods ; Contrast Media ; Magnetic Resonance Imaging/methods ; Brain/diagnostic imaging
    Chemical Substances Contrast Media
    Language English
    Publishing date 2023-02-10
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 605774-3
    ISSN 1522-2594 ; 0740-3194
    ISSN (online) 1522-2594
    ISSN 0740-3194
    DOI 10.1002/mrm.29614
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  8. Article ; Online: Patient-centered radiology: a roadmap for outpatient imaging.

    Recht, Michael P / Donoso-Bach, Lluís / Brkljačić, Boris / Chandarana, Hersh / Jankharia, Bhavin / Mahoney, Mary C

    European radiology

    2023  

    Abstract: Creating a patient-centered experience is becoming increasingly important for radiology departments around the world. The goal of patient-centered radiology is to ensure that radiology services are sensitive to patients' needs and desires. This article ... ...

    Abstract Creating a patient-centered experience is becoming increasingly important for radiology departments around the world. The goal of patient-centered radiology is to ensure that radiology services are sensitive to patients' needs and desires. This article provides a framework for addressing the patient's experience by dividing their imaging journey into three distinct time periods: pre-exam, day of exam, and post-exam. Each time period has aspects that can contribute to patient anxiety. Although there are components of the patient journey that are common in all regions of the world, there are also unique features that vary by location. This paper highlights innovative solutions from different parts of the world that have been introduced in each of these time periods to create a more patient-centered experience. CLINICAL RELEVANCE STATEMENT: Adopting innovative solutions that help patients understand their imaging journey and decrease their anxiety about undergoing an imaging examination are important steps in creating a patient centered imaging experience. KEY POINTS: • Patients often experience anxiety during their imaging journey and decreasing this anxiety is an important component of patient centered imaging. • The patient imaging journey can be divided into three distinct time periods: pre-exam, day of exam, and post-exam. • Although components of the imaging journey are common, there are local differences in different regions of the world that need to be considered when constructing a patient centered experience.
    Language English
    Publishing date 2023-12-04
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1085366-2
    ISSN 1432-1084 ; 0938-7994 ; 1613-3749
    ISSN (online) 1432-1084
    ISSN 0938-7994 ; 1613-3749
    DOI 10.1007/s00330-023-10370-3
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  9. Book: Advanced MR imaging in clinical practice

    Chandarana, Hersh

    (Clinics review articles ; Radiologic clinics of North America ; 53,3)

    2015  

    Author's details ed. Hersh Chandarana
    Series title Clinics review articles
    Radiologic clinics of North America ; 53,3
    Language English
    Size XI S., S. 441 - 617, zahlr. Ill., graph. Darst.
    Publisher Elsevier
    Publishing place Philadelphia, Pa
    Document type Book
    ISBN 9780323376174 ; 0323376177
    Database Former special subject collection: coastal and deep sea fishing

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  10. Article ; Online: Kz-accelerated variable-density stack-of-stars MRI.

    Li, Zhitao / Huang, Chenchan / Tong, Angela / Chandarana, Hersh / Feng, Li

    Magnetic resonance imaging

    2022  Volume 97, Page(s) 56–67

    Abstract: This work aimed to develop a modified stack-of-stars golden-angle radial sampling scheme with variable-density acceleration along the slice (kz) dimension (referred to as VD-stack-of-stars) and to test this new sampling trajectory with multi-coil ... ...

    Abstract This work aimed to develop a modified stack-of-stars golden-angle radial sampling scheme with variable-density acceleration along the slice (kz) dimension (referred to as VD-stack-of-stars) and to test this new sampling trajectory with multi-coil compressed sensing reconstruction for rapid motion-robust 3D liver MRI. VD-stack-of-stars sampling implements additional variable-density undersampling along the kz dimension, so that slice resolution (or volumetric coverage) can be increased without prolonging scan time. The new sampling trajectory (with increased slice resolution) was compared with standard stack-of-stars sampling with fully sampled kz (with standard slice resolution) in both non-contrast-enhanced free-breathing liver MRI and dynamic contrast-enhanced MRI (DCE-MRI) of the liver in volunteers. For both sampling trajectories, respiratory motion was extracted from the acquired radial data, and images were reconstructed using motion-compensated (respiratory-resolved or respiratory-weighted) dynamic radial compressed sensing reconstruction techniques. Qualitative image quality assessment (visual assessment by experienced radiologists) and quantitative analysis (as a metric of image sharpness) were performed to compare images acquired using the new and standard stack-of-stars sampling trajectories. Compared to standard stack-of-stars sampling, both non-contrast-enhanced and DCE liver MR images acquired with VD-stack-of-stars sampling presented improved overall image quality, sharper liver edges and increased hepatic vessel clarity in all image planes. The results have suggested that the proposed VD-stack-of-stars sampling scheme can achieve improved performance (increased slice resolution or volumetric coverage with better image quality) over standard stack-of-stars sampling in free-breathing DCE-MRI without increasing scan time. The reformatted coronal and sagittal images with better slice resolution may provide added clinical value.
    MeSH term(s) Humans ; Imaging, Three-Dimensional/methods ; Image Enhancement/methods ; Contrast Media ; Magnetic Resonance Imaging/methods ; Respiration ; Artifacts
    Chemical Substances Contrast Media
    Language English
    Publishing date 2022-12-25
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 604885-7
    ISSN 1873-5894 ; 0730-725X
    ISSN (online) 1873-5894
    ISSN 0730-725X
    DOI 10.1016/j.mri.2022.12.017
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