# US 10,945,684 B2 · Ultrasonic CT device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,684 B2 - Document ID: US10945684B2 - Status: Granted - Kind: B2 - Application number: 16/272,583 - Filed: 2019-02-11 - Published: 2019-09-26 - Granted: 2021-03-16 - Earliest claimed: 2018-03-20 - Assignees: Hitachi, Ltd. - Applicants: Hitachi, Ltd. - Inventors: Yushi Tsubota; Masakazu Sugaya; Hideo Kashima; Takahide Terada; Kenichi Kawabata; Wenjing Wu; Kazuhiro Yamanaka; Ai Masuda - Web page: https://patentgrep.com/patent/US10945684B2 ## CPC - A61B 6/032: {Transmission computed tomography [CT]} - A61B 6/5247: {combining images from an ionising-radiation diagnostic technique and a non-ionising radiation diagnostic technique, e.g. X-ray and ultrasound} - A61B 8/13: Tomography (A61B8/10, A61B8/12 take precedence) - A61B 8/4272: {involving the acoustic interface between the transducer and the tissue} - A61B 8/46: {Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient} - A61B 8/54: {Control of the diagnostic device} - A61B 8/0825: {for diagnosis of the breast, e.g. mammography} - A61B 8/14: Echotomography - A61B 8/15: Transmission-tomography - A61B 8/44: {Constructional features of the ultrasonic, sonic or infrasonic diagnostic device} - A61B 8/4416: {related to combined acquisition of different diagnostic modalities, e.g. combination of ultrasound and X-ray acquisitions} - A61B 8/463: {characterised by displaying multiple images or images and diagnostic data on one display} - A61B 8/5261: {combining images from different diagnostic modalities, e.g. ultrasound and X-ray} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The ultrasonic CT device includes: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; a ring array that irradiates an ultrasonic wave to the object and detects an ultrasonic wave reflected by the object while moving on an outer surface of the first water tank; and a signal processing unit that generates a tomographic image of the object based on a signal obtained by the ring array. The ultrasonic CT device further includes: a second water tank that houses the first water tank and the ring array; and a lid having a hole or a notch which is provided on a side of the object in the second water tank and which drains the medium. ## Claims ### Claim 1 An ultrasonic CT device comprising: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; an ultrasonic element array arranged adjacent to and spaced apart from an outer surface of the first water tank, the ultrasonic element array being configured to irradiate the object with an ultrasonic wave, and to detect an ultrasonic wave reflected by the object; and a central processing unit configured to execute instruction stored in a memory to generate a tomographic image of the object based on a signal obtained by the ultrasonic element array, the ultrasonic CT device further comprising: a second water tank configured to house the first water tank and the ultrasonic element array, wherein the ultrasonic element array is housed between the outer surface of the first water tank and an inner surface of the second water tank; and a lid disposed at an upper portion of the second water tank, extending at least from the outer surface of the first water tank to the inner surface of the second water tank, and in contact with the outer surface of the first water tank and the inner surface of the second water tank, the lid having a hole or a notch adjacent to the first water tank, the hole or notch leading into the second water tank and is configured to drain the medium. ### Claim 2 (depends on 1) The ultrasonic CT device according to claim 1, wherein the central processing unit is further configured to: detect a water level of the medium in the first water tank; and control a quantity of the medium in the first water tank based on the detected water level. ### Claim 3 An ultrasonic CT device comprising: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; an ultrasonic element array arranged on an outer surface of the first water tank, the ultrasonic element array being configured to irradiate the object with an ultrasonic wave, and to detect an ultrasonic wave reflected by the object; and a central processing unit configured to execute instruction stored in a memory to generate a tomographic image of the object based on a signal obtained by the ultrasonic element array and calculate a volume of the object in the first water tank, the ultrasonic CT device further comprising: a second water tank configured to house the first water tank and the ultrasonic element array; a lid disposed at an upper portion of the second water tank, the lid having a hole or a notch opening into the second water tank adjacent to the first water tank, the hole or notch is configured to drain the medium; and a medium supply unit configured to supply a medium, which has a quantity calculated based on the calculated volume, to the first water tank. ### Claim 4 (depends on 3) The ultrasonic CT device according to claim 3, further comprising: an optical camera configured to image the object, wherein the central processing unit is further configured to calculate the volume of the object based on an image obtained by the optical camera. ### Claim 5 (depends on 3) The ultrasonic CT device according to claim 3, wherein the central processing unit is further configured to calculate the volume of the object based on a signal obtained by the ultrasonic element array. ### Claim 6 (depends on 1) The ultrasonic CT device according to claim 1, further comprising: a cushion member that is provided on the lid; and a rubber member that is provided between the lid and the cushion member, and is configured to maintain a path for the medium to the hole or the notch. ### Claim 7 (depends on 1) The ultrasonic CT device according to claim 1, wherein the lid is inclined toward the first water tank. ### Claim 8 (depends on 1) The ultrasonic CT device according to claim 1, further comprising: a blower configured to blow warm air into the second water tank. ### Claim 9 (depends on 1) The ultrasonic CT device according to claim 1, wherein a slit is provided in an uppermost portion of the first water tank. ### Claim 10 (depends on 9) The ultrasonic CT device according to claim 9, wherein the slit is provided in a gap in the ultrasonic element array. ### Claim 11 (depends on 1) The ultrasonic CT device according to claim 1, further comprising: a tube configured to connect the hole or the notch to a lower portion of the second water tank. ### Claim 12 (depends on 1) The ultrasonic CT device according to claim 1, wherein a groove is provided in an outer surface of a lowermost portion of the first water tank. ### Claim 13 An ultrasonic CT device, comprising: a first water tank configured such that an object is inserted therein, the first water tank being filled with a medium through which an ultrasonic wave passes; an ultrasonic element array arranged adjacent to and spaced apart from an outer surface of the first water tank, the ultrasonic element array being configured to irradiate the object with an ultrasonic wave, and to detect an ultrasonic wave reflected by the object; and a central processing unit configured to execute instruction stored in a memory to generate a tomographic image of the object based on a signal obtained by the ultrasonic element array, the ultrasonic CT device further comprising: a second water tank configured to house the first water tank and the ultrasonic element array, wherein the ultrasonic element array is housed between the outer surface of the first water tank and an inner surface of the second water tank; and a lid provided at an upper portion of the second water tank and extending at least from the outer surface of the first water tank to the inner surface of the second water tank, wherein a slit is provided in an uppermost portion of the first water tank.