Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Jian Zhong
Jian Zhong Li, Shenzhen CN
| Patent application number | Description | Published |
|---|---|---|
| 20080204023 | MAGNETIC RESONANCE IMAGING APPARATUS FOR SCANNING THE SPINE - The present invention discloses a magnetic resonance imaging apparatus for scanning a spine, comprising a body coil for emitting signals, a patient table within the body coil and a spine coil for receiving signals, wherein said spine coil is fixed within said body coil and disposed under said patient table. Said patient table is movable within said body coil by slide rails fitted at the two sides thereof, so as to reduce the length of said spine coil. The cross section of said patient table is in an arched shape, and the cross section of said spine coil is in an arched shape which matches that of said patient table. By using the apparatus of the present invention, since the spine coil is disposed underneath the board of the patient table, the design and production of the board of the patient table are simplified, the number of radio frequency choke coils and radio frequency element units is reduced and so are the costs; also, the space for the patient is increased, so the patient's comfort is improved; and furthermore, the repeated plugging and unplugging of the spine coil, as in the prior art, are avoided so as to reduce the probability of damaging the coil. | 08-28-2008 |
| 20090140740 | RECEIVER COIL ARRAY FOR MAGNETIC RESONANCE IMAGING - A receiver coil array for a magnetic resonance imaging system has an inductive coupling coil incorporated in the middle coil unit of the receiver coil array as its secondary coil, which serves to regulate the frequency and impedance of the middle coil unit. The secondary coil has an output regulation circuit which can output the magnetic resonance signals received by the middle coil unit to increase the number of the coil units in the receiver coil array that receive and output resonance signals while further regulating the frequency and impedance of the middle coil unit. Since this receiver coil array achieves regulation of the frequency and impedance of the middle coil unit and increases the number of the coil units in the receiver coil array that receive and output the resonance signals, it can improve the quality of the signals received by the receiver coil array. Moreover, the design is simple and is easy to achieve. | 06-04-2009 |
| 20090189610 | MAGNETIC RESONANCE IMAGING LOCAL COIL COMPOSED OF SEPARATE PARTS - A separate type coil for a magnetic resonance imaging system has a first partial coil in a first partial casing and a second partial coil in a second partial casing, the first and second partial coils being connected to a connector for connection to the imaging system via a first cable and a second cable, respectively. The coil also has a coupler having a first part and a second part that are coupled to each other. The first part of the coupler is disposed in the first partial casing and is connected to the first partial coil, the second part of the coupler is disposed in the second partial casing The first cable is disposed in the second partial casing, and the second part of the coupler is connected to the connector for connection to the imaging system via the first cable. This separate type coil couples and connects the signals in the first partial coil to the cable and the connector via the coupler, so as to ensure the reliability of the electrical connections. | 07-30-2009 |
| 20100207632 | RECEIVER FOR MAGNETIC RESONANCE SIGNALS AND METHOD FOR RECEIVING THE MAGNETIC RESONANCE SIGNALS - In a transmission method and receiver for magnetic resonance signals, the receiver has an in vivo coil and an ex vivo coil that are independent of each other. The in vivo coil is disposed within the rectum of a human body for acquiring the magnetic resonance signals generated by the excitation of a radio-frequency transmitter, and transferring the acquired magnetic resonance signals to the ex vivo coil by electromagnetic coupling. The ex vivo coil is to be disposed outside the human body for receiving the magnetic resonance signals from the in vivo coil by the electromagnetic coupling. It is thus not necessary to make a mechanical connection from the in vivo coil to the outside, so it is very convenient for use. | 08-19-2010 |
Jian Zhong Yuan, Simi City, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100126576 | SILICON MATERIAL SURFACE ETCHING FOR LARGE POLYSILICON THIN FILM DEPOSITION AND STRACTURE - A method for forming a photovoltaic cell. The method includes providing a first silicon material characterized by a resistivity less than about 0.5 ohm cm | 05-27-2010 |
| 20100129996 | SILICON MATERIAL SURFACE ETCHING FOR LARGE GRAIN POLYSILICON THIN FILM DEPOSITION AND STRUCTURE - A method of surface treatment for silicon material. The method includes providing a first silicon material having a surface region. The first silicon material has a first purity characteristics and a first surface roughness characteristics. A chemical polishing process is perform to the surface region to cause the surface region to have a second roughness characteristics. Thereafter, a chemical leaching process is performed to the surface region to cause the first silicon material in a depth within a vicinity of the surface region to have a second purity characteristics. A polysilicon material characterized by a grain size greater than about 0.1 mm is formed using a deposition process overlying the surface region. | 05-27-2010 |
Jian Zhong Yuan, Simi Valley, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090087943 | METHOD FOR FORMING LARGE GRAIN POLYSILICON THIN FILM MATERIAL - A method of forming polysilicon thin film material for photovoltaic devices. The method includes providing a polycrystalline silicon substrate. The polycrystalline silicon substrate includes a surface region, a backside region, and a thickness. In a specific embodiment, the method forms a polysilicon thin film material using a deposition process overlying the surface region of the polycrystalline silicon substrate. The polysilicon thin film material is characterized by a grain size greater than about 0.1 mm. | 04-02-2009 |
| 20090272720 | METHOD AND HEATING DEVICE FOR FORMING LARGE GRAIN SIZE SILICON MATERIAL STRUCTURE FOR PHOTOVOLTAIC DEVICES - A method for forming polysilicon material for photovoltaic cells. A first silicon material characterized by a first purity level is provided. The first silicon material is subjected to a thermal process to transform the first silicon material to a molten state confined in a first spatial volume. The molten first silicon material is subjected to a directional cooling process provided in a second spatial volume for a predetermined period, removing thermal energy from a first region. A polycrystalline silicon material characterized by a second purity level and an average grain size greater than about 0.1 mm is formed from the molten first silicon material in a vicinity of the first region. One or more silicon wafers is formed from the polycrystalline silicon material. A polysilicon film material characterized by a grain size greater than about 0.1 mm is deposited overlying each of the silicon wafers. | 11-05-2009 |
Jian Zhong Zhao, Laveen, AZ US
| Patent application number | Description | Published |
|---|---|---|
| 20090219108 | APPARATUS AND METHOD FOR INCREASING SENSITIVITY OF ULTRASOUND TRANSDUCERS - An acoustical stack for use within an ultrasound transducer that has a center frequency has a poled piezoelectric material layer and at least one impedance matching layer. The poled piezoelectric material layer has top and bottom sides and is formed of poled piezoelectric material that has a first acoustic impedance. The poled piezoelectric material layer has a first thickness and the acoustical stack has an output electrical impedance based on the first thickness. The impedance matching layers are configured to be attached to the top and bottom sides of the poled piezoelectric material layer and have second or third thicknesses. The impedance matching layers are formed of one or more materials that have an acoustic impedance substantially similar to the first acoustic impedance. The poled piezoelectric layer and impedance matching layers form an acoustic resonance thickness. The center frequency of the transducer is based on the acoustic resonance thickness. | 09-03-2009 |