An implant planning system aids delivery of radiation to tumor sites of a patient. The system allows a user to test various combinations of virtual implants, each associated with a corresponding physical implant (e.g., a carrier with an embedded radioactive seed), and to view the dosage area of the virtual implants so that adjustments to the virtual implants may be made until a prescribed dose of radiation to a treatment area is achieved. A treatment plan developed based on the virtual implants may then be used in surgical implantation of the corresponding physical implants. For example, the implant configuration of the treatment plan may be projected onto a treatment surface of a patient, such as in a surgical room, so that physical implants may be placed according to the projected image of the virtual implants.

Disclosed is a computer-implemented method for planning a trajectory (11) through an anatomical body part (1), the trajectory (11) being usable for a medical procedure and the method comprising executing, on at least one processor of at least one computer, steps of: • a) acquiring (S1), at a processor, patient image data describing a medical image of a patient anatomical body part being the anatomical body part (1) in a patient's body; • b) acquiring (S2), at a processor, atlas trajectory data describing a model anatomical body part being a model of the patient anatomical body part, and describing the position of at least one predetermined trajectory through the model anatomical body part; • c) acquiring (S3), at a processor, critical structure data describing the position of at least one critical structure (5) in the model anatomical body part or in the patient anatomical body part; • d) determining (S4), by a processor and based on the patient image data and the atlas trajectory data and the critical structure, mapping data describing a mapping of the model anatomical body part, of the position of the at least one predetermined trajectory and of the position of the at least one critical structure (5) onto the medical image of the patient anatomical body part; • e) determining (S5), by a processor and based on the mapping data and the atlas trajectory data and the patient image data, analysis region data describing an analysis region in the patient image data, the analysis region (16) having a position in the patient anatomical body part fulfilling a predetermined spatial condition relative to the position of the mapped predetermined trajectory (6); • f) determining (S6), by the processor and based on the patient image data and the atlas trajectory data and the analysis region data and the critical structure data, straight trajectory data describing a straight line trajectory (11) through the patient anatomical body part having a position fulfilling a predetermined spatial condition relative to the position of at least one critical structure (5) in the patient anatomical body part.

A method of calibrating a monitoring system (10,14) is described in which a calibration phantom (70) is located with its center located approximately at the isocenter of a treatment room through which a treatment apparatus (16) is arranged to direct radiation, wherein the surface of the calibration phantom (70) closest to an image capture device (72) of the monitoring system (10,14) is inclined approximately 45° relative to the camera plane of an image capture device of the monitoring system. Images of the calibration phantom (70) are then captured using the image capture device (72) and the images are processed to generate a model of the imaged surface of the calibration phantom. The generated model of the imaged surface of the calibration phantom (70) is then utilized to identify the relative location of the center of the calibration phantom (70) and the camera plane of the image capture device (72) which is then utilized to determine the relative location of the camera plane of the image capture device and the isocenter of a treatment room.

A camera monitoring system for a bore based medical apparatus is described, wherein the camera monitoring system comprises a first and a second image sensor mounted on opposing surfaces of a circuit board. The first image sensor is arranged to view an object from a first viewpoint via a first lens arrangement and a first mirror and the second image sensor is arranged to view the object from a second viewpoint via a second lens arrangement and a second mirror. By having the image sensors view an object via the mirrors, via the lens arrangements, the lens arrangements contribute to the effective separation of the first and second viewpoints enabling the size of the housing of the camera to be reduced. Furthermore, a method for calibrating a camera monitoring system in a bore based setup is described and also a configuration of arranging a camera monitoring system in connection with a bore based medical apparatus.

The present application relates to a data processing method for determining the position of a soft tissue body part within a patient's body. The data processing method includes acquiring CT-image data including information about the position of the body part within a coordinate system assigned to a transportable CT-device, wherein the patient's body is positioned relative to the treatment device, and wherein the CT-device is configured to be positioned relative to the patient's body and/or relative to the treatment device, acquiring first transformation data including information about a first transformation between the coordinate system assigned to the CT-device and a coordinate system assigned to the treatment device, and determining, based on the CT-image data and the first transformation data, position data including information about the position of the body part within the coordinate system assigned to the treatment device.

The present application relates to systems and methods used to characterize or verify the accuracy of a tracker comprising optically detectable features. The tracker may be used in spatial localization using an optical sensor. Characterization results in the calculation of a Tracker Definition that includes geometrical characteristics of the tracker. Verification results in an assessment of accuracy of a tracker against an existing Tracker Definition.

Systems and methods are disclosed for detecting Cherenkov radiation produced during radiotherapy. A radiotherapy system comprises a patient receiving space for receiving a patient, a therapeutic radiation source, and a light detector configured to detect Cherenkov radiation subsequent to the emission of therapeutic radiation. Optionally, the system may make use of a optically transmissive dielectric to produce Cherenkov radiation.

Disclosed is a bore based medical system comprising a camera carrier configured to be mounted in the bore based medical system and configured to monitor and/or track patient motion within said bore based medical system during radiotherapy, the bore based medical system comprising a rotatable ring-gantry configured to emit a radiotherapy beam focused at an iso-center of the bore based medical system, wherein the ring-gantry is configured to rotate at least partly around a through-going bore having a front side and a back side, configured to receive from said front side, a movable couch configured to be moved into and out from the through-going bore, wherein further the through-going bore comprises an inner side facing an inside of the bore, and wherein the camera carrier is configured to be mounted inside the bore in connection with the inner side of the through-going bore.

An optical marker apparatus or device for tracking and compensating for patient motion during a medical imaging scan can comprise one or more optical markers, one or mounts, and a substrate. The one or more optical markers can be adapted to be detected by one or more detectors and/or cameras of a medical imaging scanner and/or motion tracking system. One or more mounts can be configured to attach the one or more markers to the substrate. The substrate, in turn, can be configured to be attached to one or more regions of a subject patient's body. For example, in some embodiments, a substrate can be adapted to be placed or otherwise attached over a nose bridge of a patient.

A patient monitoring system for monitoring a patient undergoing radiotherapy comprising a projector operable to project a pattern of light onto a patient undergoing radiation treatment, a patient restraint operable to restrain the patient relative to a treatment apparatus, an image detector operable to obtain images of the patient, and a model generation module operable to process images of the patient obtained by the image detector to generate a model of the surface of a portion of the patient, wherein at least a portion of the patient restraint is colored and the model generation module is inhibited from generating a model of the colored portion of the patient restraint.