Dorothy J. Shum
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Dorothy J. Shum has a total of 28 co-authors. Here are the top co-authors by number of shared publications:
- Hailey H. Choi
Department of Radiology and Biomedical Imaging, University of California San Francisco, 500 Parnassus Ave, San Francisco, CA 94143, USA
3 shared publications - Liina Poder
Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, Calif
3 shared publications - Lori M. Strachowski
Departments of Radiology and Biomedical Imaging and Obstetrics, Gynecology, and Reproductive Sciences, University of California San Francisco, San Francisco, Calif
2 shared publications - Vickie A. Feldstein
From the Departments of Radiology and Biomedical Imaging (A.K., L.S., L.P., S.B., V.F., J.H., E.L., D.S., H.C.), Pathology and Laboratory Medicine (J.R.), and Obstetrics, Gynecology, and Reproductive Sciences (S.W.), University of California San Francisco, 505 Parnassus Ave, San Francisco, CA 94143
2 shared publications - Allen Q. Ye
Department of Radiology and Biomedical Imaging, University of California San Francisco
1 shared publication - Alyssa Kirsch
Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Ave, San Francisco, CA 94143
1 shared publication
Latest Publications
- 1 June 2025
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 45 (6) , e240200
Understanding Normal Fetal Cardiac Views at US
Use of a checklist approach to evaluate the five essential fetal cardiac views at routine prenatal screening obstetric US can improve prenatal detection of congenital heart disease and significantly impact clinical outcomes.
- 1 June 2025
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 45 (6) , e240200
Understanding Normal Fetal Cardiac Views at US
Use of a checklist approach to evaluate the five essential fetal cardiac views at routine prenatal screening obstetric US can improve prenatal detection of congenital heart disease and significantly impact clinical outcomes.
- 1 May 2025
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 45 (5) , e240098
Secondary Postpregnancy Hemorrhage: Guide for Diagnosis and Management
Postpregnancy hemorrhage is a significant cause of maternal morbidity and can be the result of subinvolution of the placental site or retained or residual products of conception, and enhanced myometrial vascularity, which may be physiologic or associated with these causes, should not be confused with arteriovenous malformations or other vascular anomalies.
- 1 May 2025
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 45 (5) , e240098
Secondary Postpregnancy Hemorrhage: Guide for Diagnosis and Management
Postpregnancy hemorrhage is a significant cause of maternal morbidity and can be the result of subinvolution of the placental site or retained or residual products of conception, and enhanced myometrial vascularity, which may be physiologic or associated with these causes, should not be confused with arteriovenous malformations or other vascular anomalies.
- 1 January 2024
- Published by Radiological Society of North America (RSNA) in Radiology: Imaging Cancer
- Vol. 6 (1) , e230118
Assessing Adherence to US LI-RADS Follow-up Recommendations in Vulnerable Patients Undergoing Hepatocellular Carcinoma Surveillance
Purpose To assess adherence to the US Liver Imaging Reporting and Data System (LI-RADS) recommendations for hepatocellular carcinoma (HCC) surveillance and associated patient-level factors in a vulnerable, diverse patient sample. Materials and Methods The radiology report database was queried retrospectively for patients who underwent US LI-RADS-based surveillance examinations at a single institution between June 1, 2020, and February 28, 2021. Initial US and follow-up liver imaging were included. Sociodemographic and clinical data were captured from electronic medical records. Adherence to radiologist recommendation was defined as imaging (US, CT, or MRI) follow-up in 5-7 months for US-1, imaging follow-up in 3-6 months for US-2, and CT or MRI follow-up in 2 months for US-3. Descriptive analysis and multivariable modeling that adjusted for age, sex, race, and time since COVID-19 pandemic onset were performed. Results Among 936 patients, the mean age was 59.1 years; 531 patients (56.7%) were male and 544 (58.1%) were Asian or Pacific Islander, 91 (9.7%) were Black, 129 (13.8%) were Hispanic, 147 (15.7%) were White, and 25 (2.7%) self-reported as other race. The overall adherence rate was 38.8% (95% CI: 35.7, 41.9). The most common liver disease etiology was hepatitis B (60.6% [657 of 936 patients]); 19.7% of patients (183 of 936) had current or past substance use disorder, and 44.8% (416 of 936) smoked. At adjusted multivariable analysis, older age (odds ratio [OR], 1.20; P = .02), male sex (OR, 1.62; P = .003), hepatology clinic attendance (OR, 3.81; P < .001), and recent prior US examination (OR, 2.44; P < .001) were associated with full adherence, while current smoking (OR, 0.39; P < .001) was negatively associated. Conclusion Adherence to HCC imaging surveillance was suboptimal, despite US LI-RADS implementation. Keywords: Liver, Ultrasound, Screening, Abdomen/GI, Cirrhosis, Metabolic Disorders, Socioeconomic Issues Supplemental material is available for this article. © RSNA, 2024.
- 1 January 2024
- Published by Radiological Society of North America (RSNA) in Radiology: Imaging Cancer
- Vol. 6 (1) , e230118
Assessing Adherence to US LI-RADS Follow-up Recommendations in Vulnerable Patients Undergoing Hepatocellular Carcinoma Surveillance
Purpose To assess adherence to the US Liver Imaging Reporting and Data System (LI-RADS) recommendations for hepatocellular carcinoma (HCC) surveillance and associated patient-level factors in a vulnerable, diverse patient sample. Materials and Methods The radiology report database was queried retrospectively for patients who underwent US LI-RADS-based surveillance examinations at a single institution between June 1, 2020, and February 28, 2021. Initial US and follow-up liver imaging were included. Sociodemographic and clinical data were captured from electronic medical records. Adherence to radiologist recommendation was defined as imaging (US, CT, or MRI) follow-up in 5-7 months for US-1, imaging follow-up in 3-6 months for US-2, and CT or MRI follow-up in 2 months for US-3. Descriptive analysis and multivariable modeling that adjusted for age, sex, race, and time since COVID-19 pandemic onset were performed. Results Among 936 patients, the mean age was 59.1 years; 531 patients (56.7%) were male and 544 (58.1%) were Asian or Pacific Islander, 91 (9.7%) were Black, 129 (13.8%) were Hispanic, 147 (15.7%) were White, and 25 (2.7%) self-reported as other race. The overall adherence rate was 38.8% (95% CI: 35.7, 41.9). The most common liver disease etiology was hepatitis B (60.6% [657 of 936 patients]); 19.7% of patients (183 of 936) had current or past substance use disorder, and 44.8% (416 of 936) smoked. At adjusted multivariable analysis, older age (odds ratio [OR], 1.20; P = .02), male sex (OR, 1.62; P = .003), hepatology clinic attendance (OR, 3.81; P < .001), and recent prior US examination (OR, 2.44; P < .001) were associated with full adherence, while current smoking (OR, 0.39; P < .001) was negatively associated. Conclusion Adherence to HCC imaging surveillance was suboptimal, despite US LI-RADS implementation. Keywords: Liver, Ultrasound, Screening, Abdomen/GI, Cirrhosis, Metabolic Disorders, Socioeconomic Issues Supplemental material is available for this article. © RSNA, 2024.
- Open Access
- 14 December 2021
- Published by Elsevier in Clinical Imaging
- Vol. 83, 28-32
Boba sign with a twist – A variant presentation of a mature cystic teratoma complicated by torsion and rupture
- 14 December 2021
- Published by Elsevier in Clinical Imaging
- Vol. 83, 28-32
Open AccessBoba sign with a twist – A variant presentation of a mature cystic teratoma complicated by torsion and rupture
- 1 October 2021
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 41 (6) , E183-E184
US-guided Interventions to Diagnose and Treat Gynecologic and First-Trimester Disease
US-guided interventions have an essential role in the diagnosis and treatment of obstetric and gynecologic pathologic conditions, and knowledge of abnormal imaging findings, the limitations of thes... US-guided procedures have an essential role in the diagnosis and treatment of multiple obstetric and gynecologic conditions, can be performed with either transvaginal or transabdominal approaches, ...
- 1 October 2021
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 41 (6) , E183-E184
US-guided Interventions to Diagnose and Treat Gynecologic and First-Trimester Disease
US-guided interventions have an essential role in the diagnosis and treatment of obstetric and gynecologic pathologic conditions, and knowledge of abnormal imaging findings, the limitations of thes... US-guided procedures have an essential role in the diagnosis and treatment of multiple obstetric and gynecologic conditions, can be performed with either transvaginal or transabdominal approaches, ...
- 1 March 2021
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 41 (2) , 625-640
Pearls and Pitfalls in Imaging of Pelvic Adnexal Torsion: Seven Tips to Tell It’s Twisted
Adnexal torsion is an emergency with confounding clinical and imaging features, resulting in low ovarian salvage rates, but by appreciating several key associations and observations, radiologists c... Pelvic adnexal torsion is a collective term referring to twisting of an ovary, fallopian tube, or paraovarian cyst on its axis with varying degrees of vascular compromise. Although it is the fifth ...
- 1 March 2021
- Published by Radiological Society of North America (RSNA) in RadioGraphics
- Vol. 41 (2) , 625-640
Pearls and Pitfalls in Imaging of Pelvic Adnexal Torsion: Seven Tips to Tell It’s Twisted
Adnexal torsion is an emergency with confounding clinical and imaging features, resulting in low ovarian salvage rates, but by appreciating several key associations and observations, radiologists c... Pelvic adnexal torsion is a collective term referring to twisting of an ovary, fallopian tube, or paraovarian cyst on its axis with varying degrees of vascular compromise. Although it is the fifth ...