公开(公告)号：US20060033029A1

公开(公告)日：2006-02-16

申请号：US10917357

申请日：2004-08-13

Applicant: Ziv Popper

Inventor： Ziv Popper

IPC: G01T1/24

CPC classification number: G01T1/242 ,  G01T1/2928

Abstract: A stratified, solid-state detector for ionizing radiation, is provided, wherein an operating bias is applied in parallel to all the strata. Since the bias required for accelerating electrons away from holes in a solid-state material is generally a function of material thickness, a stack of thin solid-state-material layers, connected in parallel, will operate at only a fraction of the bias required for a single, thick layer of solid-state-material of an equivalent thickness. Thus, stratification allows for reduced operating voltage and improved manufacturing flexibility. Additionally, a high-voltage power supply need not be used, thus increasing the safety of the detector. Stratification may further provide information on incident-radiation energy, based on depth penetration into the detector, wherein the layers may operate as “depth pixels.” Generally, the higher the incident radiation energy, the greater the probability for deep penetration into the solid state material. The stratified, solid-state detector may be designed as a stack of relatively thin solid-state-material layers, each with dedicated electrical contacts, and electrical insulation between layers. Alternatively, the stratified detector may be designed as a stack of relatively thin solid-state-material layers, with thin electrode layers, alternating between positive and negative senses, between them. Alternatively, the stratified detector may be designed as a stack of relatively thin solid-state-material layers, with thin electrode strips between them, wherein the electrode strips form a weave: at one layer the electrode strips are positive, running in a first direction, and at another, the electrode strips are negative, and running in a direction orthogonal to the positive strips. In effect, the weave electrode structure forms a pixel-like structure from single-pixel solid-state-material layers. The incident radiation may be orthogonal to or parallel with the stack of solid-state-material layers.

公开(公告)号：US20040204646A1

公开(公告)日：2004-10-14

申请号：US10836223

申请日：2004-05-03

Applicant: V-Target Technologies Ltd.

Inventor： Michael Nagler ,  Yoel Zilberstein

IPC: A61B005/05 ,  A61B006/00

CPC classification number: G01T1/161 ,  A61B1/05 ,  A61B1/31 ,  A61B5/0035 ,  A61B5/06 ,  A61B5/415 ,  A61B5/418 ,  A61B6/4057 ,  A61B6/425 ,  A61B6/4258

Abstract: An intracorporeal-imaging head, is provided, which combines at least optical and radioactive-emission imaging, possibly also with high-resolution position tracking. The radioactive-emission-imaging probe has a wide-aperture, or coarse collimator, for high count-rate efficiency; nevertheless, the high-resolution position tracking ensures high resolution of the radioactive-emission image. Specifically, wide-aperture collimation-deconvolution algorithms are provided, for obtaining a high-efficiency, high resolution image of a radioactive-emission source, by scanning the radioactive-emission source with a probe of a wide-aperture collimator, and at the same time, monitoring the position of the radioactive-emission probe, at very fine time intervals, to obtain the equivalence of fine-aperture collimation. The blurring effect of the wide aperture is then corrected mathematically. The intracorporeal-imaging head may further include ultrasound and MRI imagers, as well as a surgical instrument, such as a biopsy needle, a knife, a cryosurgery device, a resection wire, a laser ablation device, an ultrasound ablation device, other devices for localized radiation ablations, devices for implanting brachytherapy seeds, and other minimally invasive devices. According to another embodiment, an intracorporeal-detecting head is provided, which combines at least optical and radioactive-emission detectors, for a nullYes or Nonull type detection, by the at least two modalities.

Abstract translation: 提供体内成像头，其至少结合光学和放射性发射成像，可能还具有高分辨率位置跟踪。 放射性发射成像探针具有宽孔径或粗略的准直器，以实现高计数率效率; 然而，高分辨率位置跟踪确保了放射性发射图像的高分辨率。 具体地说，提供宽孔径准直 - 去卷积算法，用于通过用宽孔径准直器的探头扫描放射性发射源，并且在相同的情况下获得放射性发射源的高效率高分辨率图像 时间，以非常精细的时间间隔监测放射性发射探头的位置，以获得细孔准直的等效性。 然后在数学上校正宽光圈的模糊效果。 体内成像头可以进一步包括超声和MRI成像仪，以及手术器械，例如活检针，刀，冷冻手术装置，切除线，激光消融装置，超声消融装置，用于 局部放射线消融，用于植入近距离放射治疗种子的装置和其它微创装置。 根据另一个实施例，提供一种体内检测头，其通过至少两种方式将至少光学和放射性发射检测器组合为“是或否”型检测。