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의학물리학
- 2023년 07월호
[Phys Med Biol .] The first mobile photon-counting detector CT: the human images and technical performance study삼성전자 / 박수진*
- 출처
- Phys Med Biol .
- 등재일
- 2023 Apr 25
- 저널이슈번호
- 68(9). doi: 10.1088/1361-6560/acc8b3.
- 내용
Abstract
Objective. The purpose of this study is to assess its human images and its unique capabilities such as the 'on demand' higher spatial resolution and multi-spectral imaging of photon-counting-detector (PCD)-CT.Approach. In this study, the FDA 510(k) cleared mobile PCD-CT (OmniTom Elite) was used. To this end, we imaged internationally certified CT phantoms and a human cadaver head to evaluate the feasibility of high resolution (HR) and multi-energy imaging. We also demonstrate the performance of PCD-CT via first-in-human imaging by scanning three human volunteers.Main results. At the 5 mm slice thickness, routinely used in diagnostic head CT, the first human PCD-CT images were diagnostically equivalent to the EID-CT scanner. The HR acquisition mode of PCD-CT achieved a resolution of 11 line-pairs (lp)/cm as compared to 7 lp cm-1using the same kernel (posterior fossa-kernel) in the standard acquisition mode of EID-CT. For the quantitative multi-energy CT performance, the measured CT numbers in virtual mono-energetic images (VMI) of iodine inserts in the Gammex Multi-Energy CT phantom (model 1492, Sun Nuclear Corporation, USA) matched the manufacturer reference values with mean percent error of 3.25%. Multi-energy decomposition with PCD-CT demonstrated the separation and quantification of iodine, calcium, and water.Significance. PCD-CT can achieve multi-resolution acquisition modes without physically changing the CT detector. It can provide superior spatial resolution compared with the standard acquisition mode the conventional mobile EID-CT. Quantitative spectral capability of PCD-CT can provide accurate, simultaneous multi-energy images for material decomposition and VMI generation using a single exposure.Affiliations
Su-Jin Park 1, Junyoung Park 1, Doil Kim 1, Duhgoon Lee 2, Chang-Lae Lee 1, Ibrahim Bechwati 2, Dufan Wu 3, Rajiv Gupta 3, Jinwook Jung 1
1Health & Medical Equipment Business, Samsung Electronics Co., Ltd, 129, SamSung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, 16677, Republic of Korea.
2Samsung NeuroLogica, 14 Electronics Ave, Danvers, MA 01923, United States of America.
3Massachusetts General Hospital, Radiology, 55 Fruit St, Boston, MA 02114, United States of America.
- 키워드
- PCD-CT; human images; photon-counting detector; techincal performance.
- 덧글달기
- 이전글 [Med Phys .] Utilization of an attentive map to preserve anatomical features for training convolutional neural-network-based low-dose CT denoiser
- 다음글 [Phys Med Biol.] Experimental evaluation of convolutional neural network-based inter-crystal scattering recovery for high-resolution PET detectors
편집위원
현재 임상에서 사용되는 단일에너지 CT 또는 이중에너지 CT에서의 한계를 극복할 수 있는 최신 기술인 에너지분별력을 가진 광계수검출기 CT에 대한 논문으로 다중에너지 영상으로부터 물질 분별의 가능성을 보여주는 논문으로 학술적 가치가 높음.
덧글달기닫기2023-07-05 14:26:46
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