A mobile radiography system with a wheeled transport frame has a vertical column mounted on the transport frame to hold in position an x-ray tube head. One or more pulley systems inside the vertical column and/or the transport frame allow easily manually adjusting a height of the x-ray tube head. The pulley systems may include cables and fixed and movable pulleys.

A mobile radiography system includes a wheeled transport frame and a vertical column mounted on the transport frame. A telescoping arm is attached to the vertical column and to an x-ray tube head. The telescoping arm includes a first section, a second section movable within the first section, and a third section movable within the second section. The first section and the second section each include a drag assembly configured to provide a drag force on the linearly movable section therewithin. The drag assemblies each include a friction material pressed against the linearly movable section to provide a constant drag force on the linearly movable section while it moves. A permanent pressure source presses the friction material against the linearly movable section.

A balance mechanism comprises a working device, a connecting arm assembly having a variable length, a torque-balancing assembly, a weighting member, and a connecting member. The connecting arm assembly couples to the working device. The connecting arm assembly is pivoted to the torque-balancing assembly by a pivot. The weighting member couples to the torque-balancing assembly. The connecting member connects the connecting arm assembly and the torque-balancing assembly. As the distance between the working device and the pivot changes, the distance between the weighting member and the pivot changes accordingly, so that a dynamic balance can be achieved.

A mobility apparatus for an imaging appliance such as a panoramic radiograph machine allows single-operator transport for on-site usage with ambulatory challenged patients. A counterbalanced pivot interface integrates the imaging appliance with a motorized transport vehicle for disposing the appliance securely on the vehicle, while the counterbalanced pivot interface allows positioning to an operational upright orientation for on-site usage. The imaging appliance includes modifications to a stock appliance for adapting the pivot interface for mobility and for usage with ADA (Americans with Disabilities Act) affected patients, such as wheelchair and scooter bound individuals. The modifications include a truncated base and truncated vertical riser, coupled with a counterbalance mass on the vehicle to maintain stability in the deployed and transportable positions. The lowered vertical riser permits the imaging mechanism to descend to accommodate seated patients.

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

An N-M tomography system comprising: a carrier for the subject of an examination procedure; a plurality of detector heads; a carrier for the detector heads; and a detector positioning arrangement operable to position the detector heads during performance of a scan without interference or collision between adjacent detector heads to establish a variable bore size and configuration for the examination. Additionally, collimated detectors providing variable spatial resolution for SPECT imaging and which can also be used for PET imaging, whereby one set of detectors can be selectably used for either modality, or for both simultaneously.

A whole-body transmission x-ray scanner includes a collimated x-ray source, a linear x-ray camera configured to detect x-rays, a counterweight, and a positioner that aligns the source and ray camera and moves the source and camera synchronously to scan and acquire radiographic images of an object located therebetween. The positioner comprises a cable alignment assembly connecting the counterweight directly to the x-ray source and camera to maintain alignment of the source and camera during a scanning mode in which the source and camera move from one end of the object to another end. The positioner comprises a motor, a bi-directional crossover slide track bearing assembly connected to the source, and a conveyor operatively connected to the motor and to the slide track bearing assembly to move the slide track bearing assembly in a loop that correspondingly translates the source and camera along a single linear axis.

An imaging system constituted of: an imager; an imager translation mechanism arranged to translate the imager along a predetermined translation axis in each of a first direction and a second direction responsive to a provided electrical power, the second direction opposing the first direction, the predetermined translation axis exhibiting an imaging angle with a floor, the first direction being toward the floor along the translation axis, the imaging angle being less than 90 degrees and greater than 0 degrees; a piston translation mechanism; and a piston power mechanism arranged to provide motive power to the piston translation mechanism, wherein the piston translation mechanism is arranged to translate the imager in the second direction responsive to the provided motive power in the absence of the provided electrical power.

A device may include a base, a transmission assembly, and a response assembly. The transmission assembly may be configured to move a component of a medical device. The transmission assembly may include a cable and a wheel connected to the base. An end of the cable may be connecting to a part of the component of the medical device. The response assembly may be connected to the transmission assembly. The response assembly may be configured to generate a response in response to a break of the cable.

In this diagnostic X-ray apparatus (1), a radius of a spiral pulley (63) is set to a radius that differs from a radius of an Archimedes' spiral so that a tensile force of the spring member (61) applied to a second wire rope (67b) and a weight on an X-ray generation unit (50) side applied to a first wire rope (67a) are balanced.