Diagnostic Efficiency of Low-Dose CT Angiography Compared With Conventional Angiography in Peripheral Arterial Occlusions

Abstract

CTA of peripheral arteries with a low tube voltage of 70 kV provides reliable information and serves as a rapidly performed and easily available "one-stop-shop" imaging modality in the diagnosis of peripheral arterial occlusion diseases.

Non–Electrocardiogram-Triggered 70-kVp High-Pitch Computed Tomography Angiography of the Whole Aorta With Iterative Reconstruction

“…6,[16][17][18][19][20][21][22] High-pitch acquisition allows for imaging of the whole aorta in less than 2 seconds, 12 thus avoiding long exposure time and reducing radiation dose and required administered volume of contrast agent. The CTA with lower tube voltages at 100 kVp and 6,24,25 which demonstrated that such techniques maintain diagnostic image quality while allowing for lower radiation dose and contrast agent volume.…”

“…Recent studies emphasized the potential of 70-kVp CTA for assessment of peripheral artery, coronary artery diseases and cerebral artery. [16][17][18][19][20][21][22][23] Qi et al 18 demonstrated that 70-kVp acquisition during lower extremity high-pitch CTA with IR allows for a significant reduction of radiation dose and contrast material volume without compromising image quality despite a slight increase in image noise. Zhang et al 19 found that prospectively ECG-triggered high-pitch coronary CTA at 70 kVp with 30 mL of contrast agent is able to provide diagnostic image quality at a radiation dose of less than 0.2 mSv in patients with a body mass index below 25 kg/m 2 and a heart rate of less than 70 beats per minute.…”

“…Recently, several authors investigated 70-kVp CTA for imaging of peripheral artery, coronary artery disease, and cerebral artery in adults and reported significant dose savings with a diagnostic image quality in selected patients. [16][17][18][19][20][21][22][23] However, to our knowledge, the potential of 70-kVp CTA for CTA of the aorta has not been investigated so far. Additionally, reduced tube voltage may allow for a significant reduction of contrast medium volume in CTA studies because the attenuation of iodinated contrast media increases at low tube voltage.…”

Overview of the Role of Duplex Ultrasound for Treatment and Surveillance of Peripheral Arterial Disease

“…3,4 However, it is interesting to note that higher sensitivities and specificities obtained under these conditions do not necessarily translate into clinical relevance. Different patients with the same degree of luminal narrowing in the same vascular segment might present with different clinical symptoms or might even be free of symptoms, partially due to various degrees of muscular remodeling and collateralization.…”

“…However, the reported sensitivities and specificities are comparable to more recently published data for CE-MRA and CTA obtained with modern hardware and software modalities. 3,4 The performance of DUS in the infrapopliteal runoff via the crural (tibial/peroneal arteries) and pedal vessels compared to DSA was analyzed separately in five selected citations. 11,12,16,18,21 This was most recently studied by the Joint Endovascular and Non-Invasive Assessment of LImb perfusion (JENALI) Group, which used a novel anatomical scoring system to compare its ability to detect patent or occluded vessels compared to DSA.…”