Computed tomographic pulmonary angiography: Three cases of low-tube-voltage acquisition with a slow injection of contrast medium

Atsushi Urikura; Tsukasa Yoshida; Masahiro Endo; Koiku Asakura; Rui Sato; Atsushi Saiga; Michihisa Moriguchi; Kazuaki Nakashima; Takeshi Aramaki

doi:10.1177/20584601221131476

Computed tomographic pulmonary angiography: Three cases of low-tube-voltage acquisition with a slow injection of contrast medium

Acta Radiol Open. 2022 Oct 14;11(10):20584601221131476. doi: 10.1177/20584601221131476. eCollection 2022 Oct.

Authors

Atsushi Urikura^{1

2}, Tsukasa Yoshida¹, Masahiro Endo³, Koiku Asakura¹, Rui Sato⁴, Atsushi Saiga⁴, Michihisa Moriguchi⁵, Kazuaki Nakashima⁶, Takeshi Aramaki^{1

4}

Affiliations

¹ Division of Diagnostic Radiology, Shizuoka Cancer Center, Shizuoka, Japan.
² Department of Radiological Technology, Radiological Diagnosis, National Cancer Center Hospital, Tokyo, Japan.
³ Division of Comprehensive Radiology Center, Chiba University Hospital, Chiba-shi, Japan.
⁴ Division of Interventional Radiology, Shizuoka Cancer Center, Shizuoka, Japan.
⁵ Department of Gastroenterology and Hepatology, Kyoto Prefectural University of Medicine, Kyoto, JAPAN.
⁶ Division of Breast Imaging and Intervention, Shizuoka Cancer Center, Shizuoka, Japan.

Abstract

Acute pulmonary thromboembolism occurring during cancer treatment has been increasing with the number of cancer patients and chemotherapy cases. Computed tomographic pulmonary angiography (CTPA) for evaluating the pulmonary artery is generally performed using rapid injection of contrast medium. However, intravenous catheters for contrast medium injection might cause extravasation due to rapid injection. This case series describes three patients who underwent contrast-enhanced computed tomography combined with low-tube-voltage imaging and slow injection. Low-tube-voltage slow-injection CTPA can be an effective technique for obtaining high contrast enhancement while accommodating fragile veins and low injection rates.

Keywords: Pulmonary thromboembolism; computed tomography; contrast enhancement; low-tube-voltage; slow injection.

Publication types

Case Reports